[Rd] R-devel internal errors during check produce?

[Martin Maechler]

>>>>> Kurt Hornik 
>>>>>     on Mon, 29 Jun 2020 16:13:03 +0200 writes:

>>>>> Jan Gorecki writes:
    >> So the unique.default is from the R tools package during
    >> checks.  I don't see those issues on CRAN checks.

    > I cannot reproduce this locally (and have no clues about
    > docker).  Perhaps you can try to debug this on your end?
    > And see what env_list is when the error occurs?

    > Best -k

Indeed, if it is a bug in R (as opposed to being an assumption
that 'data.table' makes about undocumented R internals), it
should be reproducible with a very small dummy package instead
of data.table. ... or actually reproducible with relatively
simple R code calling unique() not envolving any non base package.

Martin


    >> Exact environment where I am reproducing this issue is a
    >> fresh ubuntu, no R packages pre-installed docker pull
    >> registry.gitlab.com/jangorecki/dockerfiles/r-devel
    >> https://gitlab.com/jangorecki/dockerfiles/-/raw/master/r-devel/Dockerfile

    >> On Sat, Jun 27, 2020 at 12:37 AM Jan Gorecki
    >> <j.gorecki using wit.edu.pl> wrote:
    >>> 
    >>> Hi R developers,
    >>> 
    >>> On R-devel (2020-06-24 r78746) I am getting those two
    >>> new exceptions during R check. I found a change which
    >>> eventually may be related
    >>> https://github.com/wch/r-source/commit/69de92b9fb1b7f2a7c8d1394b8d56050881a5465
    >>> I think this may be a regression. I grep'ed package
    >>> manuals and R code for unique.default but don't see
    >>> any. Usage section of the unique method looks fine as
    >>> well. Errors look a little bit like internal errors.
    >>> 
    >>> * checking Rd \usage sections ... NOTE Error in
    >>> unique.default(env_list) : LENGTH or similar applied to
    >>> environment object Calls: <Anonymous>
    >>> ... .get_S3_generics_as_seen_from_package -> unique ->
    >>> unique.default Execution halted The \usage entries for
    >>> S3 methods should use the \method markup and not their
    >>> full name.  * checking S3 generic/method consistency
    >>> ... WARNING Error in unique.default(env_list) : LENGTH
    >>> or similar applied to environment object Calls:
    >>> <Anonymous> ... .get_S3_generics_as_seen_from_package ->
    >>> unique -> unique.default
    >>> 
    >>> I don't think if it is related but I build R-devel with
    >>> extra args: --with-recommended-packages
    >>> --enable-strict-barrier --disable-long-double I check
    >>> with: --as-cran --no-manual To reproduce download
    >>> current data.table from CRAN (1.12.8) and run R check
    >>> 
    >>> Best regards, Jan Gorecki

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